1. Removes the protected state without running the application in the background. Then click phone manager > xx% remaining > for the protected application, uncheck the checkbox of running the application in the background.

2. You can adjust the screen brightness. Click to enter Settings > Display > Brightness to lower the value of the brightness progress bar. You can check the battery charge in the battery management of the mobile phone housekeeper. Reasonable setting of the use scene.

3. Clear unnecessary applications in the background. You can click the box key in the navigation bar, and then click the Clear key to clear the applications that you no longer need to use. Some super applications, such as QQ and WeChat, cannot be closed in this way. If you want to close the Super app, you can click on Mobile Manager > Battery Management >; Power consumption firewall (background power consumption application).

4. Reduce network connection time. Click to enter Settings > More > Mobile Network > Always Connect Data Services and deselect it. Then go to Settings > WLAN & gt menu > Advanced Settings > Keep WLAN connection dormant, and then select Never. (After the above functions are turned off, the mobile phone will be disconnected when the screen is locked, and the background networking application cannot be used normally. )

5. Upgrade the mobile phone system to the latest version. The new version improves the system stability and experience, and will optimize some known problems.

Remarks: If there is no improvement after the above operations, it is recommended to back up important data and try to restore the factory settings. If you still can't solve the problem, you need to take the purchase invoice to the local Huawei after-sales service outlets for testing.